118 SECTION HYGROCYBE 



7-9 X 4.5-6 fx, ellipsoid, smooth, pale yellow in Melzer's reagent. Ba- 

 sidia 36-50 X 5.5-8 ju, 4-spored. Pleurocystidia and cheilocystidia none. 

 Gill trama subparallel to slightly interwoven. Cuticle composed of a 

 thin zone of somewhat gelatinous hyphae. Clamp connections rare on 

 the cuticular hyphae. 



No. 1911 of Ellis and Everhart's North American Fungi has also 

 been studied, and its spores agree with the description above. Occa- 

 sional slightly larger spores are found which may arise from 2-spored 

 basidia, although no 2-spored basidia were found. They are irregular 

 in shape and measure up to 10 /x long. The species is very distinct 

 from, but closely related to, H. marginatus. The difference in the color 

 of their gills will readily distinguish them if the odor of H. aurato- 

 cephalus happens to be very faint or lacking. H. marginatus var. con- 

 color approaches it the closest but lacks an odor and also clamp con- 

 nections. 



52 



Hygrophorus marginatus var. concolor Sm. 



Papers, Mich. Acad. Sci., Arts and Letters 38: 59. 1953 



Illustration: 

 Fig. 30. 



Pileus 1-3 cm broad, conic to obtusely conic, becoming conic- 

 campanulate, color "deep chrome" over all, or in some the disc "orange" 

 in buttons, in age "Mars yellow" (brilliant orange yellow), fading fi- 

 nally to near "apricot yellow" over all; surface glabrous, moist and 



Fig. 30. H. marginatus var. concolor 



„ 



